7.31 • at the corners of a square whose sides are 8.0 m long in the middle of the gym floor, as shown in Fig. E7.31. You take your physics book and push it from one person to the other. The book has a mass of You and three friends stand Figure E7.31 Beth 8.0 m Carlos 8.0 m 1.5 kg, and the coefficient of kinetic friction between the book and the You Kim floor is uk = 0.25. (a) The book slides from you to Beth and then from Beth to Carlos, along the lines connecting these people. What is the work done by friction during this displacement? (b) You slide the book from you to Carlos along the diagonal of the square. What is the work done by friction during this displacement? (c) You slide the book to Kim, who then slides it back to you. What is the total work done by friction during this 1-2 (a Le the friotion foroe on the book conservotive

7.31 • at the corners of a square whose sides are 8.0 m long in the middle of the gym floor, as shown in Fig. E7.31. You take your physics book and push it from one person to the other. The book has a mass of You and three friends stand Figure E7.31 Beth 8.0 m Carlos 8.0 m 1.5 kg, and the coefficient of kinetic friction between the book and the You Kim floor is uk = 0.25. (a) The book slides from you to Beth and then from Beth to Carlos, along the lines connecting these people. What is the work done by friction during this displacement? (b) You slide the book from you to Carlos along the diagonal of the square. What is the work done by friction during this displacement? (c) You slide the book to Kim, who then slides it back to you. What is the total work done by friction during this 1-2 (a Le the friotion foroe on the book conservotive

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.

Question

7.31 • You and three friends stand Figure E7.31
at the corners of a square whose
sides are 8.0 m long in the middle
of the gym floor, as shown in
Fig. E7.31. You take your physics
book and push it from one person
to the other. The book has a mass of
Beth
8.0 m
Carlos
8.0 m
1.5 kg, and the coefficient of kinetic
friction between the book and the
You
Kim
floor is uk = 0.25. (a) The book
slides from you to Beth and then from Beth to Carlos, along the lines
connecting these people. What is the work done by friction during
this displacement? (b) You slide the book from you to Carlos along
the diagonal of the square. What is the work done by friction during
this displacement? (c) You slide the book to Kim, who then slides it
back to you. What is the total work done by friction during this
motion of the book? (d) Is the friction force on the book conservative
or nonconservative? Explain.
%3D

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